<template>
  <div class="list" ref="wrapper">
    <div>
      <div class="area">
        <div class="title border-topbottom">
          当前城市
        </div>
        <div class="button-list">
          <div class="button-wrapper">
            <div class="button">{{this.city}}</div>
          </div>
        </div>
      </div>
      <div class="area">
        <div class="title border-topbottom">
          热门城市
        </div>
        <div class="button-list">
          <div class="button-wrapper" v-for="item of hot" :key="item.id" @click="handleClick(item.name)">
            <div class="button">{{item.name}}</div>
          </div>
        </div>
      </div>
      <div v-for="(item, key) of cities" :key="item.key" :ref="key" class="area">
        <div class="title border-topbottom">
          {{key}}
        </div>
        <div class="item-list">
          <div class="item border-bottom" v-for="innerItem of item" :key="innerItem.id" @click="handleClick(innerItem.name)">
            {{innerItem.name}}
          </div>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import Bscroll from 'better-scroll'
import { mapState, mapMutations } from 'vuex'
export default {
  name: 'CityList',
  props: {
    cities: Object,
    hot: Array,
    letter: String
  },
  methods: {
    handleClick (city) {
      this.changeCity(city)
      this.$router.push('/')
    },
    ...mapMutations(['changeCity'])
  },
  watch: {
    letter () {
      if (this.letter) {
        const e = this.$refs[this.letter][0]
        this.scroll.scrollToElement(e)
      }
    }
  },
  computed: {
    ...mapState(['city'])
  },
  mounted () {
    this.scroll = new Bscroll(this.$refs.wrapper, {click: true})
  }
}
</script>

<style lang="stylus" scoped>
  @import '~styles/varibles.styl'
  .border-topbottom
    &:before
      boder-color: #ccc
    &:after
      boder-color: #ccc
  .border-bottom
  &:before
    boder-color: #ccc
  .list
    overflow: hidden
    position: absolute
    top: 1.58rem
    left: 0
    right: 0
    bottom: 0
    .title
      line-height: .54rem
      padding-left: .2rem
      background: #eee
      color: #666
    .button-list
      padding: .1rem
      padding-right: .6rem
      overflow: hidden
      .button-wrapper
        float: left
        width: 33.33%
        .button
          margin: .1rem
          padding: .1rem 0
          text-align: center
          border: .02rem solid #ccc
          border-radius: .06rem
    .item-list
      .item
        line-height: .54rem
        color: #666
        padding-left: .2rem
</style>
